Harrisburg, Missouri Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Harrisburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast19%—84°71°—
- SundayJul 5Overcast16%—87°67°+3°
- MondayJul 6Clear——86°67°-1°
- TuesdayJul 7Clear——86°65°0°
- WednesdayJul 8Overcast——90°66°+4°
- ThursdayJul 9Light Showers33%0.04″89°70°-1°
- FridayJul 10Drizzle37%0.03″85°67°-4°
AQI 51 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.0 µg/m³ (AQI 50) with a 0.80 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 39 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 9 around 1 PM.
- Present
- AQI 39
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 9.0 µg/m³ (AQI 50) with a 0.80 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.80
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:28 PM
- Moonset
- 11:22 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Harrisburg at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 65256
16-Day Forecast — Harrisburg
- Sat84°71°19%
- Sun87°67°16%
- Mon86°67°4%
- Tue86°65°1%
- Wed90°66°5%
- Thu89°70°33%
- Fri85°67°37%
- Sat81°68°16%
- Sun82°64°9%
- Mon83°60°5%
- Tue86°63°3%
- Wed86°68°6%
- Thu93°71°9%
- Fri95°76°10%
- Sat95°73°16%
- Sun91°77°16%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Harrisburg
SPC has placed Harrisburg in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Harrisburg
- 65256